+/// RegisterStatistic - The first time a statistic is bumped, this method is
+/// called.
+void Statistic::RegisterStatistic() {
+ // If stats are enabled, inform StatInfo that this statistic should be
+ // printed.
+ if (Enabled)
+ StatInfo->addStatistic(this);
+ // Remember we have been registered.
+ Initialized = true;
+}
+
+struct NameCompare {
+ bool operator()(const Statistic *LHS, const Statistic *RHS) const {
+ int Cmp = std::strcmp(LHS->getName(), RHS->getName());
+ if (Cmp != 0) return Cmp < 0;
+
+ // Secondary key is the description.
+ return std::strcmp(LHS->getDesc(), RHS->getDesc()) < 0;
+ }
+};
+
+// Print information when destroyed, iff command line option is specified.
+StatisticInfo::~StatisticInfo() {
+ // Statistics not enabled?
+ if (Stats.empty()) return;
+
+ // Get the stream to write to.
+ std::ostream &OutStream = *GetLibSupportInfoOutputFile();
+
+ // Figure out how long the biggest Value and Name fields are.
+ unsigned MaxNameLen = 0, MaxValLen = 0;
+ for (unsigned i = 0, e = Stats.size(); i != e; ++i) {
+ MaxValLen = std::max(MaxValLen,
+ (unsigned)utostr(Stats[i]->getValue()).size());
+ MaxNameLen = std::max(MaxNameLen,
+ (unsigned)std::strlen(Stats[i]->getName()));
+ }
+
+ // Sort the fields by name.
+ std::stable_sort(Stats.begin(), Stats.end(), NameCompare());